<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面未找到</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Helvetica Neue", Arial, sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            padding: 20px;
        }
        .container {
            text-align: center;
            max-width: 600px;
            width: 100%;
        }
        .error-code {
            font-size: 8rem;
            font-weight: 700;
            color: #007bff;
            margin-bottom: 20px;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }
        .error-title {
            font-size: 2rem;
            margin-bottom: 15px;
        }
        .error-desc {
            font-size: 1.1rem;
            color: #6c757d;
            margin-bottom: 30px;
            line-height: 1.6;
        }
        .btn-home {
            background-color: #007bff;
            color: white;
            border: none;
            padding: 12px 30px;
            font-size: 1rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-home:hover {
            background-color: #0056b3;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }
        footer {
            position: absolute;
            bottom: 20px;
            font-size: 0.9rem;
            color: #6c757d;
        }
        @media (max-width: 576px) {
            .error-code {
                font-size: 6rem;
            }
            .error-title {
                font-size: 1.5rem;
            }
            .btn-home {
                padding: 10px 24px;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="error-code">404</div>
        <h2 class="error-title">页面未找到</h2>
        <p class="error-desc">很抱歉，您访问的页面不存在或已被移除。请检查网址是否正确，或返回首页继续浏览。</p>
        <button class="btn-home" onclick="window.location.href='/'">返回首页</button>
    </div>
    <footer>
        <p>© 2025 您的网站名称 - 所有权利保留</p>
    </footer>
</body>
</html>